//谁看过我-内容
import React, { Component } from 'react';
import {
    View,
    Text,
    ListView,
    RefreshControl,
    ActivityIndicator,
} from 'react-native';

import { SelWhoSawMeMoble } from '../../../actions/postionCollectAction';      //加载action
import { connect } from 'react-redux';
import { bindActionCreators } from 'redux';

import Whosee_list from './whosee_list';

var Dimensions = require('Dimensions');
var width = Dimensions.get('window').width;
var height = Dimensions.get('window').height;

const ds = new ListView.DataSource({ rowHasChanged: (r1, r2) => { r1 !== r2 } });//listView 数据判断方式
class Whosee_body extends Component {
    // 初始化模拟数据
    constructor(props) {
        super(props);
        this.state = {
            uploading: true, //下拉刷新按钮状态 (初始化加载时处在loading状态)
            dwloading: false, //上拉刷新按钮状态
        }
        this.isFirst = true                         //页面第一次加载
    }

    //加载后渲染页面
    componentDidMount() {
        const { actions } = this.props;
        actions.SelWhoSawMeMoble({ page: 1 }); //初始化查询
    }
    render() {
        //获取用户列表数据及是否等待状态
        const { resumeBrowseList, isloading } = this.props.guanzhu.data;
        //创建listView数据源
        const dataSource = ds.cloneWithRows(resumeBrowseList)
        return (
            <View style={{ flex: 1 }}>
                <ListView
                    refreshControl={                            //是否更新
                        <RefreshControl                         //刷新控件
                            refreshing={this.state.uploading && this.props.guanzhu.isloading}                  //刷新时候的小控件
                            onRefresh={this._onRefresh.bind(this)}
                        />}
                    enableEmptySections={true}
                    dataSource={dataSource}         //数据源(数组)
                    renderRow={this.renderRow.bind(this)}                 // 遍历数组的回调函数
                    onEndReachedThreshold={1}                  //滚动临界值（到达后执行onEndReached）
                    onEndReached={this.onEndReached.bind(this)}          //屏幕到底部的触发的事件
                    renderFooter={this.renderFooter.bind(this)}           //底部刷新组件
                />
            </View>
        );
    }

    //刷新隐藏按钮
    componentDidUpdate() {
        if (this.state.uploading && !this.props.guanzhu.isloading) {
            this.setState({
                uploading: false //下拉刷新按钮状态：隐藏
            })
        }
        if (this.state.dwloading && !this.props.guanzhu.isloading) {
            this.setState({
                dwloading: false //上拉刷新按钮状态：隐藏
            })
        }
    }

    //下拉刷新开始
    _onRefresh() {
        this.props.guanzhu.isloading = true //设置为加载状态
        const { actions } = this.props;
        actions.SelWhoSawMeMoble({ page: 1 });
        this.setState({
            uploading: true //下拉刷新按钮状态：显示
        });
    }

    onEndReached() {
        if (!this.isFirst && !this.props.guanzhu.isloading) {
            const { resumeBrowseList, page, pages } = this.props.guanzhu.data;
            if (page != pages) {//不等于最后一页加载
                const { actions } = this.props;
                actions.SelWhoSawMeMoble({ page: page + 1 });
                this.props.guanzhu.isloading = true;
                this.setState({
                    dwloading: true //下拉刷新按钮状态 显示
                })
            }
        } else {
            this.isFirst = false;
        }
    }

    renderFooter() {
        if (!this.props.guanzhu.ret) {
            //console.log("请求失败");
        }
        if (this.state.dwloading) {
            return (<View style={{ marginVertical: 10 }}>
                <ActivityIndicator
                    animating={true}
                    style={{ height: 10, alignItems: 'center', justifyContent: 'center', padding: 1, }}
                    size="small" />
            </View>);
        }
        if (this.state.uploading) {
            return (<View style={{
                marginVertical: 10, height: 100, alignItems: 'center', justifyContent: 'flex-end'

            }}>
                <Text>玩命加载ing</Text>
            </View>);
        }
        return (<View style={{ marginVertical: 10 }} />);
    }

    //list子项加载方法
    renderRow(rowData) {
        return (
            <Whosee_list
                company={rowData}
                navigation={this.props.navigation} />
        )
    }
}

//组合action
var actions = {
    SelWhoSawMeMoble,
}
//连接state到props
const mapStateToProps = state => {
    return {
        guanzhu: state.SelWhoSawMeMoble             //自己的reducers
    }
}
//连接action
const mapDispatchToProps = (dispatch) => {
    return {
        actions: bindActionCreators(actions, dispatch)
    }
}
//导出组合好的组件(组合后状态改变重新渲染组合组件的页面)
export default connect(
    mapStateToProps, mapDispatchToProps
)(Whosee_body);